如何在WPF中创建带箭头和点的制表符标题

<UserControl x:Class="YourNamespace.YourUserControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             mc:Ignorable="d"
             d:DesignHeight="30" d:DesignWidth="300">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="Auto"/>
        </Grid.ColumnDefinitions>
        
        <Label x:Name="titleLabel" Content="Your Title" Margin="0,0,5,0"/>
        
        <Polygon Grid.Column="1" Fill="Black" Width="10" Height="10" Points="0,0 10,0 5,10" Margin="0,0,5,0"/>
    </Grid>
</UserControl>

<Window x:Class="YourNamespace.YourWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:YourNamespace"
        Title="Your Window" Height="450" Width="800">
    <Grid>
        <local:YourUserControl Title="Your Title"/>
    </Grid>
</Window>